cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A248109 Integer part of square root of A010811(n) = n^23.

Original entry on oeis.org

0, 1, 2896, 306827, 8388608, 109183006, 888667667, 5231514822, 24296003999, 94143178827, 316227766016, 946271759726, 2573856496961, 6461726194556, 15152085430295, 33500360392119, 70368744177664, 141306648466586
Offset: 0

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Author

Karl V. Keller, Jr., Oct 01 2014

Keywords

Examples

			for n = 4, floor(sqrt(n^23)) = 8388608.
		

Crossrefs

Cf. A010811 (n^23).

Programs

  • Mathematica
    IntegerPart[Sqrt[#]]&/@(Range[0,20]^23) (* Harvey P. Dale, Feb 03 2015 *)
  • PARI
    a(n)=sqrtint(n^23) \\ Charles R Greathouse IV, Oct 01 2014
  • Python
    from decimal import Decimal, getcontext
    getcontext().prec = 100
    for n in range(0,1001): print(n, int(Decimal(n**23).sqrt()))
    

Formula

a(n) = floor(sqrt(n^23)).